ra8_io_fsfmt_demo Directory Reference

Directory dependency graph for ra8_io_fsfmt_demo:

Directories
	src

Detailed Description

Drives the ra8_io filesystem-format registry (#159) with no external hardware.

The registry lets the fabric recognise the on-disk filesystem on a block device and report what that format can do, so the upper layers never hard-code a switch over FAT versus exFAT. Each format supplies a probe – does this volume look like me? – and a capability descriptor: read-only or writable, sub-directories, streaming writes, maximum name length.

Two halves:

• The built-in probe. A FAT12 volume is formatted on a RAM block device, then ra8_io_fsfmt_probe resolves it to the "fat" format and its advertised capabilities are checked against what FAT can actually do.
• The foreign-format seam. A stub format whose probe claims any volume carrying a magic byte in block 0 is registered through ra8_io_fsfmt_register; a second RAM device marked with that byte resolves to the stub, with the stub's own read-only and case-sensitive capabilities. That is the load-bearing claim: a new format plugs in with no change to the built-ins.